API Extensions documentation not building correctly

[Anne Gentle]

The only existing API documentation for extensions was merged in with
this merge request:

https://review.openstack.org/#change,2045

Unfortunately, it appears it has been left behind in subsequent
merges, as it doesn't appear in the Sphinx-built homepage at
http://nova.openstack.org/. See the blank area below here, that's
where it should be. http://nova.openstack.org/#api-extensions

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/4220

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/4220
Committed: http://github.com/openstack/nova/commit/aee45cc4abdc0ae311cfb22a08a0fee1139b4fd0
Submitter: Jenkins
Branch: master

commit aee45cc4abdc0ae311cfb22a08a0fee1139b4fd0
Author: Russell Bryant <email address hidden>
Date: Wed Feb 15 18:51:36 2012 -0500

    Fix API extensions documentation, bug 931516.

    This patch fixes the docs so that the API extensions documentation gets
    included. In passing, also update the API extensions index to include
    an extension that was not listed.

    Change-Id: Ia16cab2b29bbc121d940dc4ed9f033340935cde8